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TDA8948J Folha de dados(PDF) 9 Page - NXP Semiconductors

Nome de Peças TDA8948J
Descrição Electrónicos  4-channel audio amplifier
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Fabricante Electrônico  NXP [NXP Semiconductors]
Página de início  http://www.nxp.com
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TDA8948J Folha de dados(HTML) 9 Page - NXP Semiconductors

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TDA8948J_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 27 February 2008
9 of 26
NXP Semiconductors
TDA8948J
4-channel audio amplifier
11. Static characteristics
[1]
A minimum load is required at supply voltages of VCC >22V: RL =3 Ω for SE and RL =6 Ω for BTL.
[2]
The amplifier can deliver output power with non-clipping output signals into nominal loads as long as the ratings of the IC are not
exceeded.
[3]
With a load connected at the outputs the quiescent current will increase.
[4]
The DC output voltage, with respect to ground, is approximately 0.5 VCC.
[5]
∆V
O(offset) = |VOUT+
VOUT−|
[6]
Channels 3 and 4 can only be set to mute or on mode by MODE2 when VMODE1 >VCC − 2.0 V.
12. Dynamic characteristics
Table 8.
Static characteristics
VCC =17V; Tamb =25 °C; RL =8 Ω; VMODE1 =VCC; VMODE2 =VCC; VI = 0 V; measured in test circuit Figure 11; unless
otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply
VCC
supply voltage
operating
[1] 917
26
V
no (clipping) signal
[2] -
-
28
V
Iq
quiescent current
VCC = 17 V; RL = ∞
[3] -
100
145
mA
Istb
standby current
-
-
-
10
µA
Output pins
VO
output voltage
-
[4] -9
-V
∆VO(offset)
differential output voltage offset
BTL mode
[5] -
-
170
mV
Mode selection pins
VMODE1
voltage on pin MODE1
on mode
VCC − 2.0 -
VCC
V
mute mode
4.5
-
VCC − 3.5 V
standby mode
0
-
0.8
V
VMODE2
voltage on pin MODE2
on mode: channels 3 and 4
[6] VCC − 2.0 -
VCC
V
mute mode: channels 3 and 4
0
-
VCC − 3.5 V
IMODE1
current on pin MODE1
0 V < VMODE1 < (VCC − 3.5 V)
-
-
20
µA
IMODE2
current on pin MODE2
0 V < VMODE2 < (VCC − 3.5 V)
-
-
20
µA
Table 9.
Dynamic characteristics SE
VCC =17V; Tamb =25 °C; RL =4 Ω; fi = 1 kHz; VMODE1 =VCC; VMODE2 =VCC; measured in test circuit Figure 11; unless
otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Po(SE)
SE output power
VCC = 17 V; see Figure 7
THD = 10 %; RL =4 Ω
6.5
8
-
W
THD = 0.5 %; RL =4 Ω
-6
-W
VCC =20V
THD = 10 %; RL =4 Ω
-12
-
W
THD
total harmonic distortion
Po = 1 W
-
0.1
0.5
%
Gv
voltage gain
-
25
26
27
dB
Zi
input impedance
-
40
60
-
k


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